1721425625604 has 96 divisors (see below), whose sum is σ = 4698243648000. Its totient is φ = 543562278048.

The previous prime is 1721425625581. The next prime is 1721425625611. The reversal of 1721425625604 is 4065265241271.

1721425625604 is a `hidden beast` number, since 1 + 7 + 2 + 1 + 4 + 25 + 62 + 560 + 4 = 666.

It is a super-3 number, since 3×1721425625604³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1721425625604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30922507 + ... + 30978125.

It is an arithmetic number, because the mean of its divisors is an integer number (48940038000).

Almost surely, 2^{1721425625604} is an apocalyptic number.

It is an amenable number.

1721425625604 is an abundant number, since it is smaller than the sum of its proper divisors (2976818022396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1721425625604 is a wasteful number, since it uses less digits than its factorization.

1721425625604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70734 (or 70726 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 1721425625604 in words is "one trillion, seven hundred twenty-one billion, four hundred twenty-five million, six hundred twenty-five thousand, six hundred four".